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Résumé :
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Taxonomic change has a long history of 'wrong-footing' bird recording. This is particularly true in the case of the Subalpine Warbler Sylvia cantillans, now revealed to comprise not one but three species. This short paper attempts to disentangle the somewhat complex issues involved, with a view to updating BBRC's position on these 'new' taxa. It reviews the traditional taxonomy and previous assessment/recording history, summarises the newly emerged taxonomic framework and its associated identification criteria, examines the implications for future assessment/recording, and outlines a new approach to recording that will take effect from 1st January 2015.
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